<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div id="app">
  <label for="man">
    <input type="radio" id="man"  value="男" v-model="sex">男
  </label>

  <label for="woman">
    <input type="radio" id="woman"  value="女" v-model="sex">女
  </label>
  <h2>选择的性别是:{{sex}}</h2>
</div>

<script src="../js/vue.js"></script>
<script>
    const  app = new Vue({
      el:'#app',
      data:{
        message: '卢本伟牛逼！',
        sex: ''
      }
    })
</script>
</body>
</html>